Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 39, Issue 4, Pages 1027-1032Publisher
Optica Publishing Group
DOI: 10.1364/JOSAB.445314
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Funding
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior [88887.509678/2020-00]
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This paper describes the derivation of shape coefficients for scalar Hermite-Gaussian beams from the coefficients of Laguerre-Gaussian beams. It analyzes their behavior and compares the resulting solutions with ideal paraxial counterparts.
Scalar Hermite-Gaussian beams (HGBs) are natural higher-order solutions to the paraxial wave equation in Cartesian coordinates. Their particular shapes make them a valuable tool in the domain of light-matter interaction. Describing these beams in the generalized Lorenz-Mie theory (GLMT) requires a set of beam shape coefficients (BSCs), which may be quite challenging to evaluate. Since their exact analytic form expressions are unlikely to be found in the foreseeable future, we resort to a particular set of strategies. The main idea is to write HGBs as combinations of Laguerre-Gaussian beams (LGBs), which have already been studied in the GLMT framework by using a finite-series algorithm. This paper describes how to deduce the HGB BSCs directly from LGB BSCs, analyzes their behavior, and compares the resulting GLMT-remodeled solutions with their ideal paraxial counterparts. (C) 2022 Optica Publishing Group
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